Linux/AM5718: PCIe based Ehternet Interface

Hi Subbaiah,

You can use as reference PCIe device tree configuration from dra7.dtsi and dra7xx-clocks.dtsi files which is very closer to am57xx processor.
Also check the linked below articles:
processors.wiki.ti.com/.../Linux_Core_PCIe_EP_User's_Guide
www.kernel.org/.../PCIEBUS-HOWTO.txt

BR
Tsvetolin Shulev

Hi,

we have gone through the processors.wiki.ti.com/.../Linux_Core_PCIe_EP_User's_Guide

whatever mentioned in this guide we are not finding

DTS Modification

The default dts is configured to be used in root complex mode. In order to use it in endpoint mode, the following changes has to be made in dts file.

diff --git a/arch/arm/boot/dts/am572x-idk.dts b/arch/arm/boot/dts/am572x-idk.dts
index b2edeab..1ef70b3 100644
--- a/arch/arm/boot/dts/am572x-idk.dts
+++ b/arch/arm/boot/dts/am572x-idk.dts
@@ -428,11 +428,11 @@
 };

 &pcie1_rc {
-       status = "okay";
        gpios = <&gpio3 23 GPIO_ACTIVE_HIGH>;
 };

 &pcie1_ep {
+       status = "okay";
        gpios = <&gpio3 23 GPIO_ACTIVE_HIGH>;
 };

Linux Driver Configuration

The following config options has to be enabled in order to configure the PCI controller to be used as a "Endpoint Test" function driver.

CONFIG_PCI_ENDPOINT=y
CONFIG_PCI_EPF_TEST=y
CONFIG_PCI_DRA7XX_EP=y


Kindly suggest the what might be the issue.

Thanks & Regards,
N.V.Subbaiah